Stefano
Details sent privately to avoid the wrath of Kevin!
I have Radiomobile Model 100s in my Bentley and my 400 and have restored both, but the programs are dire, so I haven't bothered with an FM conversion.
I recommend
Radio Dismuke for fun and Spotify for music lovers who don't mind parting with a tenner a month. Some people chuck their CDs etc and just use it for all their listening. It works on an iPhone too.
I have Apple TV so that when I'm listening to music a mosaic of Bristol and Bentley pictures scroll across the screen to keep my interest. Here are some of them
Flickr: Bristols and Bentleys' Photostream
Ash